「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞24-50-00∞∞∞∞∞∞∞∞∞∞Page 240
Feb 01/04R
CES
TASK 24-50-00-810-813
Failure of the 212XP and 216XP Busbars in Normal Flight Configuration
1. Possible Causes
_______________
- CNTOR-AC SVCE BUS NORM SPLY (12XN)
- wiring
- C/B-BUS2/212XP/SPLY (10XN)
- RELAY-GND/FLT SELECT CTL (7XX)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from Engine 1(2) AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2) AMM 24-51-55-000-001 Removal of the AC Service Bus Normal Supply Contactor (12XN) AMM 24-51-55-400-001 Installation of the AC Service Bus Normal Supply
Contactor (12XN)
ASM 24-42/01
ASM 24-51/03
3. Fault Confirmation
__________________
A. Job Set-up
(1) Aircraft Maintenance Configuration
(a) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
B. Test
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the forward attendant panel - the ceiling forward and aft lights (L 120RH, push the CABIN WDO and side) do not come on CABIN CLG pushbutton switches. - the window forward and aft lights (R
side) do not come on.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞24-50-00∞∞∞∞∞∞∞∞∞∞Page 241
Feb 01/04R CES
4. Fault Isolation
_______________
R **ON A/C 001-049, 051-062, 101-105, 151-152, 201-205,
A. If the test confirms the fault:
- do a check of the status of the circuit breaker (10XN).
(1) If the circuit beaker is closed:
- do a check for 115VAC on the pins A/D, A/E and A/F of the contactor (12XN) (Ref. ASM 24-51/03).
(a) If there is no 115VAC:
- do a check of the wiring between the circuit breaker (10XN) and the contactor (12XN) (Ref. ASM 24-51/03).
1 If there is no continuity:
_ - repair the wiring.
2 If there is continuity:
_
- replace the C/B-BUS2/212XP/SPLY (10XN).
(b) If there is 115VAC:
- replace the CNTOR-AC SVCE BUS NORM SPLY (12XN) (Ref. AMM TASK 24-51-55-000-001) and (Ref. AMM TASK 24-51-55-400-001).
1 If the fault continues:
_
- replace the RELAY-GND/FLT SELECT CTL (7XX).
2 If the fault continues:
_
- do a check and repair the wiring: . from the circuit breaker (3XX) to the pin B/3 of the contactor (12XN). . from the pin B/5 of the contactor (12XN) to the first terminal block (Ref. ASM 24-51/03).
(2) If the circuit breaker is open:
- close it.
(a) If it trips:
- do a check of the wiring between the circuit breaker (10XN) and the busbars (212XP) and (216XP) (Ref. ASM 24-42/01).
1 If there is a short to ground:
_ - repair the wiring.
2 If there is no short to ground:
_
- replace the C/B-BUS2/212XP/SPLY (10XN).
R **ON A/C 063-099, 106-149, 153-199, 206-299, 301-399, 401-499,
A. If the test confirms the fault:
- do a check of the status of the circuit breaker (10XN).
(1) If the circuit beaker is closed:
- do a check for 115VAC on the pins 10, 11, 12 of the module 20XX (Ref. ASM 24-51/03).
(a) If there is no 115VAC:
- do a check of the wiring between the circuit breaker (10XN) and the module 20XX (Ref. ASM 24-51/03).
1 If there is no continuity:
_ - repair the wiring.
2 If there is continuity:
_
- replace the C/B-BUS2/212XP/SPLY (10XN).
(b) If there is 115VAC:
- replace the CNTOR-AC SVCE BUS NORM SPLY (12XN) (Ref. AMM TASK 24-51-55-000-001) and (Ref. AMM TASK 24-51-55-400-001).
1 If the fault continues:
_
- replace the RELAY-GND/FLT SELECT CTL (7XX).
2 If the fault continues:
_
- do a check and repair the wiring: . from the circuit breaker (3XX) to the pin B/3 of the contactor (12XN). . from the pin B/5 of the contactor (12XN) to the first terminal block (Ref. ASM 24-51/03).
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本文链接地址：A320 Trouble Shooting Manual 排故手册 电源 3(132)
